gcc/
	* doc/sourcebuild.texi (Test Directives): Add dg-xfail-run-if.
gcc/testsuite/
	* lib/target-supports-dg.exp (dg-xfail-run-if): New.
	* gcc.test-framework/dg-do-run-xrif-exp-F.c: New test.
	* gcc.test-framework/dg-do-run-xrif-exp-P.c: New test.
	* gcc.test-framework/dg-do-run-xrif-exp-XF.c: New test.
	* gcc.test-framework/dg-do-run-xrif-exp-XP.c: New test.
	* gcc.test-framework/dg-dot-run-xrif-exp-F.c: New test.
	* gcc.test-framework/dg-dot-run-xrif-exp-P.c: New test.
	* gcc.test-framework/dg-dot-run-xrif-exp-XF.c: New test.
	* gcc.test-framework/dg-dot-run-xrif-exp-XP.c: New test.
	* gcc.test-framework/test-framework.awk: Handle new tests.

From-SVN: r135729